What is the lowest battery voltage before the zmax will not fire ?
Well it turns out I was close at 3.4. Just now it thru up a "Lou" on the display. Menu option 4 says the batt is at 3.3v. So it vapes at 3.4v and doesn't at 3.3v.
Wasn't the guy who played the Hulk named Lou. Maybe the message means... you're gonna get mad as the Hulk if you keep trying to vape this thing.